<script setup>
import { getSubCategoryAPI } from '@/apis/category'
import { useFilterData } from './composables/usefilterData'
import { usegetSubCategoryAPI } from './composables/usegetSubCategoryAPI'
import { ref,defineAsyncComponent } from 'vue'
//解构出filterData
const { filterData } = useFilterData()
//解构出getSubCategoryAPI
const { subCategoryList, subCategory, getSubCategory } = usegetSubCategoryAPI()
//异步导入GoodsItem组件
const GoodsItem = defineAsyncComponent(() => import('../Home/components/GoodsItem.vue'))
//tab切换事件
const tabChange = (tabName) => {
    //修改subCategory.sortField
    subCategory.sortField = tabName
    //修改subCategory.page
    subCategory.value.page = 1
    //重新请求数据
    getSubCategory()
}

//滚动加载数据
const load = async () => {
    const disabled = ref(false)
    //判断是否还有数据
    if (subCategoryList.length >= subCategory.value.total) {
        return false
    }
    //修改subCategory.page
    subCategory.value.page++
    //拿到老数据
    const res = await getSubCategoryAPI(subCategory.value)
    //新老数据合并
    subCategoryList.value = [...subCategoryList.value, ...res.data.result.items]

    //加载完毕，禁用滚动加载
    if (res.data.result.items.length === 0) {
        disabled.value = true
    }
}
//禁用滚动加载
const disabled = async ()=>{
    
}
</script>

<template>
    <div class="container ">
        <!-- 面包屑 -->
        <div class="bread-container">
            <el-breadcrumb separator=">">
                <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
                <el-breadcrumb-item :to="{ path: `/category/${filterData.parentId}` }">{{ filterData.parentName }}
                </el-breadcrumb-item>
                <el-breadcrumb-item>{{ filterData.name }}</el-breadcrumb-item>
            </el-breadcrumb>
        </div>
        <div class="sub-container">
            <el-tabs v-model="subCategory.sortField" @tab-change="tabChange">
                <el-tab-pane label="最新商品" name="publishTime"></el-tab-pane>
                <el-tab-pane label="最高人气" name="orderNum"></el-tab-pane>
                <el-tab-pane label="评论最多" name="evaluateNum"></el-tab-pane>
            </el-tabs>
            <div class="body" v-infinite-scroll="load">
                <!-- 商品列表-->
                <GoodsItem v-for="item in subCategoryList" :key="item.id" :goods="item">

                </GoodsItem>
            </div>
        </div>
    </div>

</template>



<style lang="scss" scoped>
.bread-container {
    padding: 25px 0;
    color: #666;
}

.sub-container {
    padding: 20px 10px;
    background-color: #fff;

    .body {
        display: flex;
        flex-wrap: wrap;
        padding: 0 10px;
    }

    .goods-item {
        display: block;
        width: 220px;
        margin-right: 20px;
        padding: 20px 30px;
        text-align: center;

        img {
            width: 160px;
            height: 160px;
        }

        p {
            padding-top: 10px;
        }

        .name {
            font-size: 16px;
        }

        .desc {
            color: #999;
            height: 29px;
        }

        .price {
            color: $priceColor;
            font-size: 20px;
        }
    }

    .pagination-container {
        margin-top: 20px;
        display: flex;
        justify-content: center;
    }


}
</style>